hospital due to eating Sera's bizarre meals, which are seen in Mael and Orito's cases. Sera has a brief argument with Ayumu over her participation in Saras' assassination attempt on Eu and, on moral grounds, decides to let Eu live. However, Sera is killed by Yoruno, only to be resurrected when Eu pricks her own finger to supply blood for her — blood which makes her the key to sealing the gates of the underworld. Kyoko reveals that Sera is a tsundere and masks her true feelings, especially when it comes to Ayumu. Mael is a blonde vampire ninja from a different faction than Sera's, who's also a student in Ayumu's high school, where she's known as Yuki Yoshida. Because of how this name is written, she is often nicknamed , but she only allows Ayumu to call her by that name. Yuki has a giant flame spirit inside her, named Mysticore. When she loses control, it will take over her consciousness and go on a rampage, destroying everything nearby. As a result of accidentally kissing Ayumu when he was pushed onto her by Haruna, they are technically married by her faction's customs, and she acts like his wife while at school. Even though initially, she only accepts her position as his wife due to tradition, she eventually develops strong feelings for Ayumu due to his kind and daring persona. Ayumu doesn't seem to take it very seriously, but Yuki says that she's always wanted to be married. She is somewhat tomboyish, speaking with the term "ore" when referring to herself. Mael can use tonkotsu ramen soup to instantly defeat Megalos, though the explanation behind it is too advanced even for her to understand. She even has a machine that sprays the same soup over the city should a horde of Megalos attack. However, in the anime, the machine had failed (it is hinted that Sera's faction had destroyed it because it might upset the natural environment when used), and thus the project was abandoned. In Season 2, Ayumu gives Mael a ring that suppresses Mysticore, though she mistakes it for a wedding ring. Sarasvati, for short, is a vampire ninja and Sera's superior who lives in the human world as Kirara Hoshikawa. She's also known as Lovely Kirara, leading a "double" life as an idol singer who is very popular in the human world. Known as an earnest individual